Sinq(13/15)
Sinq^-1(13/15)
q= 60.05°
Answer:
72 adults
22 children
Step-by-step explanation:
Let c = no. of children
a = no. of adults
Then 4c = total sales for the children and
7a = total sales for the adults
So, a + c = 94 and 7a + 4c = 592
<u> -4a - 4c = -376</u>
3a = 216
a = 72 adults
72 + c = 94
c = 22 children
Answer:
56 days
Explanation:

where A is final amount, Ao is initial amount, t is time taken, h is half life
Here given:
initial amount: 400 millicuries
final amount: 3.125 millicuries
half life: 8 days
time taken: ?
Hence solve for time taken:

<u>insert values given</u>

<u>divide both sides by 400</u>

<u>apply exponent rule</u>
<u />
<u>simplify</u>

<u>multiply both sides by 8</u>

The answer is C. 15,18,21